Abstract

The High Arctic bumble bee fauna is rather poorly known, while a growing body of recent molecular research indicates that several Arctic species may represent endemic lineages with restricted ranges. Such local endemics are in need of special conservation efforts because of the increasing anthropogenic pressure and climate changes. Here, we re-examine the taxonomic and biogeographic affinities of bumble bees from Novaya Zemlya using historical samples and recently collected materials (1895–1925vs.2015–2017). Three bumble bee species inhabit the Yuzhny (Southern) Island and the southern edge of Severny (Northern) Island of this archipelago:BombusglacialisFriese, 1902,B.hyperboreusSchönherr, 1809, andB.pyrrhopygusFriese, 1902.Bombusglacialisshares three unique COI haplotypes that may indicate its long-term (pre-glacial) persistence on Novaya Zemlya. In contrast,BombushyperboreusandB.pyrrhopygusshare a rather low molecular divergence from mainland populations, with the same or closely related haplotypes as those from Arctic Siberia and Norway. A brief re-description ofBombuspyrrhopygusbased on the newly collected topotypes is presented. Habitats, foraging plants and life cycles of bumble bees on Novaya Zemlya are characterized, and possible causes of extremely low bumble bee abundance on the archipelago are discussed. The species-poor bumble bee fauna of Novaya Zemlya is compared with those in other areas throughout the Arctic. The mean bumble bee species richness on the Arctic Ocean islands is three times lower than that in the mainland Arctic areas (3.1vs.8.6 species per local fauna, respectively). General linear models (GLMs) indicate that this difference can be explained by specific environmental conditions of insular areas. Our findings highlight that the insularity is a significant factor sharply decreasing species richness in bumble bee assemblages on the Arctic Ocean archipelagoes through colder climate (lower summer temperatures), prevalence of harsh Arctic tundra landscapes with poor foraging resources, and in isolation from the mainland.

Addeddate

2025-03-21 02:28:23

Bhl_virtual_titleid

210914

Bhl_virtual_volume

v.866 (2019)

Call number

10_3897_zookeys_866_35084

Call-number

10_3897_zookeys_866_35084

Foldoutcount

0

Genre

article

Identifier

pollinatorsonpo866pota

Identifier-ark

ark:/13960/s2d7cw5gwd7

Identifier-bib

10_3897_zookeys_866_35084

Identifier-doi

10.3897/zookeys.866.35084

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

79

Page_number_module_version

1.0.5

Page_range

85-115

Pages

31

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

ZooKeys 866

Year

2019

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